Layouts and layers

Assigning a key

Open Layout
Select the required layer
Click a key or encoder action
Select a new action in the key picker

The picker accepts a physical key press from a regular keyboard or a mouse selection

Key picker sections

Section	Purpose
Basic	Letters, numbers, navigation, F1–F24 function keys, and numpad
Symbols	Symbols that depend on the active operating-system layout
Universal	EN/RU-independent punctuation and compatible RMK layout controls
Modifiers	Modifiers, layer actions, Mod+Key, Mod-Tap, and One-Shot Mod
Special	System, media, mouse, RGB, and special actions
Macros	Select and edit device macros
Tap Dance	Select and edit Tap Dance actions
Custom	Custom keycodes exposed by the firmware

Some sections appear only when the firmware supports them

F13–F24 are available as regular function keys in the main picker and nested action pickers

Mod+Key and Mod-Tap

Mod+Key always sends the selected modifier together with another key
Mod-Tap acts as a regular key when tapped and as a modifier when held
Right-click changes the secondary key, while Ctrl + right-click switches the modifier side where supported

Layers

A layer is a separate set of assignments for the same physical keys

Layer 0 is normally the base layer, while higher layers contain navigation, symbols, mouse functions, media, and other actions

Switching and names

Click the arrows beside the layer name
Scroll the mouse wheel over the layout
Use the Left and Right keys
Click the layer name to rename it
Hover over a layer key to preview its target layer
Right-click a layer key to open its target layer

Layer names are saved to compatible firmware and included in .entlayout

Layer actions

Action	Behavior
`MO`	Activates a layer while held
`TG`	Toggles a layer on or off
`OSL`	Activates a layer for the next key press
`TT`	Works like `MO` when held and toggles the layer after a series of taps
`TO`	Switches to the selected layer and disables other active layers
`DF`	Changes the default base layer
`LT`	Sends a key when tapped and activates a layer when held
`Inherit`	Inherits the assignment from a lower layer
`None`	Disables the position on the current layer

Layer operations

Open Layout → Layer operations

Copy layer — copies all keys and compatible encoder assignments
Paste layer — pastes the copy into a layer with matching geometry
Mirror layer — swaps left and right positions and modifier sides
All keys — None — disables every position on the current layer
All keys — Inherit — inherits every position from lower layers
Undo layer change — restores the state before the latest group operation

Export a layout backup before filling or mirroring a layer

`.entlayout` import and export

Open Layout and select Export layout to save a portable backup

Depending on device capabilities, the file can include:

Key and encoder maps
Encoder visibility and layout geometry options
Layer names
Macros, Combos, Tap Dance, Key Overrides, and Alt Repeat
Compatible portable firmware settings: Auto Shift, Tap-Hold, One Shot, Mouse Keys, Magic, Grave Escape, and touchpad options
Layout-related Text Expander settings

During import, Entropy first creates an automatic backup of the current device and then displays a report of imported and skipped sections

On compatible RMK firmware, Universal Symbols and Russian letters used as Combo outputs or in any Tap Dance action are exported and imported without loss

Exact mapping is used for the same device, while universal mapping transfers compatible positions between different layouts

Portable settings are applied only when the target device supports a matching setting and format. The import report lists unsupported, incompatible, and failed values

Do not disconnect the device until the file has been applied